TimeDomainRefl
TimeDomainRefl, commonly abbreviated as TDR, refers to a technique used in electrical engineering and physics to analyze and measure the properties of transmission lines and other distributed systems. The method involves sending a short electrical pulse down a transmission line and observing the reflected waves that return to the source. By analyzing the timing, amplitude, and shape of these reflections, engineers can infer characteristics such as impedance mismatches, cable length, and signal attenuation.
The principle behind TDR relies on the fact that when an impedance discontinuity occurs in a transmission
TDR instruments typically consist of a pulse generator, an oscilloscope or digital storage unit, and a high-impedance
While TDR is highly effective for identifying physical discontinuities, it does not directly measure absolute impedance